Fig. 4From: Natural variation of physiological traits, molecular markers, and chlorophyll catabolic genes associated with heat tolerance in perennial ryegrass accessionsRelative expression levels of four CCGs of the five most and least heat-tolerant ryegrass accessions. Relative expression levels of LpNYC1 (a), LpNOL (b), LpSGR (c), and LpPPH (D). Represented data were means and standard error (n = 4)Back to article page